Android Studio need to rebuild project before each run

Question

Recently the android studio shows Error Java cannot find Symbol or each run. i have to go to built and rebuilt the project before each run. Is there any way to fix it? i do

Answer 1

in android studio version 2+, use this in all gradle config files

android{
..

compileOptions {
        sourceCompatibility JavaVersion.VERSION_1_7
        targetCompatibility JavaVersion.VERSION_1_7
        incremental = false;
}
...

}

and if you have experimental for ndk use like this

model {
    android.compileOptions {
        sourceCompatibility JavaVersion.VERSION_1_7
        targetCompatibility JavaVersion.VERSION_1_7
        incremental false
    }
}